Flag of city Jelgava (Latvia). Translated from http://www.jelgava.lv/:
"City flag approved October 28,1938 - Law about city
flag of Jelgava (Valdības Vēstnesis nr. 247)
1. City of Jelgava have their own flag. It is divided in two
equal parts: above dark blue, below - red; in center coat of arms
of Jelgava city.
2. Private persons and organizations are forbidden to use picture
of flag of Jelgava city, with or without coat of arms, in flags
or badges of societies. In allother circumstances private persons
and organizations can use picture of city flag or its imitation
with permission of city council.
3. Other rules concerning use of flag in institutions of Jelgava
city are developed in Jelgava city council and approved in
Ministry of Internal Affairs.